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Synthesis of a heat‐resistant DOPO derivative and its application as flame‐retardant in engineering plastics
Author(s) -
Xie Mingchen,
Zhang Shimin,
Ding Yanfen,
Wang Feng,
Liu Peng,
Tang Hanying,
Wang Yintao,
Yang Mingshu
Publication year - 2017
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.44892
Subject(s) - acryloyl chloride , fire retardant , char , materials science , derivative (finance) , thermal decomposition , polymer chemistry , decomposition , nuclear chemistry , chemical engineering , composite material , monomer , pyrolysis , organic chemistry , chemistry , polymer , engineering , acrylate , financial economics , economics
A star‐shaped DOPO derivative (GL‐3DOPO, P content 10.8 wt %) was synthesized through a two‐step reaction involving glycerol, acryloyl chloride, and DOPO. The derivative demonstrated a great improvement of thermal decomposition temperature increased to 360 °C from 194 °C (under N 2 atmosphere), promoting its application in thermoplastics of high processing temperature. When blended with engineering plastics including PET, PBT, PC, PA6, and PA66 at a GL‐3DOPO loading of 25 wt %, all the compounds reached the UL94 V‐0 level and increased limit oxygen index (LOI). In PET system, LOI raised from 22.8% to 35.4% with P 2.5 wt % and passed the V‐0 test with only 0.8 P wt %. Compact char layers were found in the PET system after LOI test, suggesting that GL‐3DOPO acted both in gas and condensed‐phase mode. All results indicated that GL‐3DOPO could be a potential flame‐retardant for engineering plastics. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134 , 44892.
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